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b77209e0 PA |
1 | /* Multi-process control for GDB, the GNU debugger. |
2 | ||
b811d2c2 | 3 | Copyright (C) 2008-2020 Free Software Foundation, Inc. |
b77209e0 PA |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "defs.h" | |
6c95b8df | 21 | #include "exec.h" |
b77209e0 PA |
22 | #include "inferior.h" |
23 | #include "target.h" | |
24 | #include "command.h" | |
06da564e | 25 | #include "completer.h" |
b77209e0 PA |
26 | #include "gdbcmd.h" |
27 | #include "gdbthread.h" | |
28 | #include "ui-out.h" | |
76727919 | 29 | #include "observable.h" |
6c95b8df PA |
30 | #include "gdbcore.h" |
31 | #include "symfile.h" | |
268a13a5 | 32 | #include "gdbsupport/environ.h" |
c82c0b55 | 33 | #include "cli/cli-utils.h" |
be34f849 | 34 | #include "continuations.h" |
6ecd4729 PA |
35 | #include "arch-utils.h" |
36 | #include "target-descriptions.h" | |
47902076 | 37 | #include "readline/tilde.h" |
5ed8105e | 38 | #include "progspace-and-thread.h" |
b77209e0 | 39 | |
8e260fc0 TT |
40 | /* Keep a registry of per-inferior data-pointers required by other GDB |
41 | modules. */ | |
42 | ||
6b81941e | 43 | DEFINE_REGISTRY (inferior, REGISTRY_ACCESS_FIELD) |
6c95b8df PA |
44 | |
45 | struct inferior *inferior_list = NULL; | |
b77209e0 PA |
46 | static int highest_inferior_num; |
47 | ||
f67c0c91 | 48 | /* See inferior.h. */ |
491144b5 | 49 | bool print_inferior_events = true; |
b77209e0 | 50 | |
3a3fd0fd PA |
51 | /* The Current Inferior. This is a strong reference. I.e., whenever |
52 | an inferior is the current inferior, its refcount is | |
53 | incremented. */ | |
6c95b8df PA |
54 | static struct inferior *current_inferior_ = NULL; |
55 | ||
b77209e0 PA |
56 | struct inferior* |
57 | current_inferior (void) | |
58 | { | |
6c95b8df PA |
59 | return current_inferior_; |
60 | } | |
61 | ||
62 | void | |
63 | set_current_inferior (struct inferior *inf) | |
64 | { | |
65 | /* There's always an inferior. */ | |
66 | gdb_assert (inf != NULL); | |
67 | ||
3a3fd0fd PA |
68 | inf->incref (); |
69 | current_inferior_->decref (); | |
6c95b8df PA |
70 | current_inferior_ = inf; |
71 | } | |
72 | ||
089354bb SM |
73 | private_inferior::~private_inferior () = default; |
74 | ||
0550c955 | 75 | inferior::~inferior () |
b77209e0 | 76 | { |
0550c955 PA |
77 | inferior *inf = this; |
78 | ||
e0ba6746 | 79 | discard_all_inferior_continuations (inf); |
6c95b8df | 80 | inferior_free_data (inf); |
3f81c18a | 81 | xfree (inf->args); |
6ecd4729 | 82 | target_desc_info_free (inf->tdesc_info); |
0550c955 PA |
83 | } |
84 | ||
85 | inferior::inferior (int pid_) | |
86 | : num (++highest_inferior_num), | |
87 | pid (pid_), | |
9a6c7d9c | 88 | environment (gdb_environ::from_host_environ ()), |
0550c955 PA |
89 | registry_data () |
90 | { | |
0550c955 | 91 | inferior_alloc_data (this); |
5b6d1e4f PA |
92 | |
93 | m_target_stack.push (get_dummy_target ()); | |
b77209e0 PA |
94 | } |
95 | ||
05779d57 PA |
96 | void |
97 | inferior::set_tty (const char *terminal_name) | |
98 | { | |
99 | if (terminal_name != nullptr && *terminal_name != '\0') | |
100 | m_terminal = make_unique_xstrdup (terminal_name); | |
101 | else | |
102 | m_terminal = NULL; | |
103 | } | |
104 | ||
105 | const char * | |
106 | inferior::tty () | |
107 | { | |
108 | return m_terminal.get (); | |
109 | } | |
110 | ||
b77209e0 PA |
111 | struct inferior * |
112 | add_inferior_silent (int pid) | |
113 | { | |
0550c955 | 114 | inferior *inf = new inferior (pid); |
b05b1202 PA |
115 | |
116 | if (inferior_list == NULL) | |
117 | inferior_list = inf; | |
118 | else | |
119 | { | |
0550c955 | 120 | inferior *last; |
b05b1202 PA |
121 | |
122 | for (last = inferior_list; last->next != NULL; last = last->next) | |
123 | ; | |
124 | last->next = inf; | |
125 | } | |
b77209e0 | 126 | |
76727919 | 127 | gdb::observers::inferior_added.notify (inf); |
a79b8f6e | 128 | |
6c95b8df PA |
129 | if (pid != 0) |
130 | inferior_appeared (inf, pid); | |
a562dc8f | 131 | |
b77209e0 PA |
132 | return inf; |
133 | } | |
134 | ||
135 | struct inferior * | |
136 | add_inferior (int pid) | |
137 | { | |
138 | struct inferior *inf = add_inferior_silent (pid); | |
139 | ||
140 | if (print_inferior_events) | |
151bb4a5 PA |
141 | { |
142 | if (pid != 0) | |
143 | printf_unfiltered (_("[New inferior %d (%s)]\n"), | |
144 | inf->num, | |
a068643d | 145 | target_pid_to_str (ptid_t (pid)).c_str ()); |
151bb4a5 PA |
146 | else |
147 | printf_unfiltered (_("[New inferior %d]\n"), inf->num); | |
148 | } | |
b77209e0 PA |
149 | |
150 | return inf; | |
151 | } | |
152 | ||
a79b8f6e | 153 | void |
7a41607e | 154 | delete_inferior (struct inferior *todel) |
b77209e0 PA |
155 | { |
156 | struct inferior *inf, *infprev; | |
b77209e0 PA |
157 | |
158 | infprev = NULL; | |
159 | ||
160 | for (inf = inferior_list; inf; infprev = inf, inf = inf->next) | |
6c95b8df | 161 | if (inf == todel) |
b77209e0 PA |
162 | break; |
163 | ||
164 | if (!inf) | |
165 | return; | |
166 | ||
08036331 PA |
167 | for (thread_info *tp : inf->threads_safe ()) |
168 | delete_thread_silent (tp); | |
4a92f99b | 169 | |
7e1789f5 PA |
170 | if (infprev) |
171 | infprev->next = inf->next; | |
172 | else | |
173 | inferior_list = inf->next; | |
174 | ||
76727919 | 175 | gdb::observers::inferior_removed.notify (inf); |
a79b8f6e | 176 | |
7a41607e SM |
177 | /* If this program space is rendered useless, remove it. */ |
178 | if (program_space_empty_p (inf->pspace)) | |
381ce63f | 179 | delete inf->pspace; |
ef3f321b | 180 | |
0550c955 | 181 | delete inf; |
ef3f321b SM |
182 | } |
183 | ||
6c95b8df PA |
184 | /* If SILENT then be quiet -- don't announce a inferior exit, or the |
185 | exit of its threads. */ | |
186 | ||
187 | static void | |
188 | exit_inferior_1 (struct inferior *inftoex, int silent) | |
189 | { | |
190 | struct inferior *inf; | |
6c95b8df PA |
191 | |
192 | for (inf = inferior_list; inf; inf = inf->next) | |
193 | if (inf == inftoex) | |
194 | break; | |
195 | ||
196 | if (!inf) | |
197 | return; | |
198 | ||
08036331 PA |
199 | for (thread_info *tp : inf->threads_safe ()) |
200 | { | |
201 | if (silent) | |
202 | delete_thread_silent (tp); | |
203 | else | |
204 | delete_thread (tp); | |
205 | } | |
6c95b8df | 206 | |
b930cab1 SM |
207 | inf->thread_map.clear (); |
208 | ||
76727919 | 209 | gdb::observers::inferior_exit.notify (inf); |
6c95b8df PA |
210 | |
211 | inf->pid = 0; | |
9ab8741a | 212 | inf->fake_pid_p = false; |
ef4a3395 PA |
213 | inf->priv = NULL; |
214 | ||
6c95b8df PA |
215 | if (inf->vfork_parent != NULL) |
216 | { | |
217 | inf->vfork_parent->vfork_child = NULL; | |
218 | inf->vfork_parent = NULL; | |
219 | } | |
68c9da30 PA |
220 | if (inf->vfork_child != NULL) |
221 | { | |
222 | inf->vfork_child->vfork_parent = NULL; | |
223 | inf->vfork_child = NULL; | |
224 | } | |
8cf64490 | 225 | |
68c9da30 | 226 | inf->pending_detach = 0; |
85046ae2 | 227 | /* Reset it. */ |
ee841dd8 | 228 | inf->control = inferior_control_state (NO_STOP_QUIETLY); |
66452beb PW |
229 | |
230 | /* Clear the register cache and the frame cache. */ | |
231 | registers_changed (); | |
232 | reinit_frame_cache (); | |
6c95b8df PA |
233 | } |
234 | ||
235 | void | |
00431a78 | 236 | exit_inferior (inferior *inf) |
6c95b8df | 237 | { |
6c95b8df | 238 | exit_inferior_1 (inf, 0); |
6c95b8df PA |
239 | } |
240 | ||
00431a78 PA |
241 | void |
242 | exit_inferior_silent (inferior *inf) | |
243 | { | |
244 | exit_inferior_1 (inf, 1); | |
245 | } | |
246 | ||
bc09b0c1 SM |
247 | /* See inferior.h. */ |
248 | ||
b77209e0 | 249 | void |
bc09b0c1 | 250 | detach_inferior (inferior *inf) |
b77209e0 | 251 | { |
bc09b0c1 SM |
252 | /* Save the pid, since exit_inferior_1 will reset it. */ |
253 | int pid = inf->pid; | |
abbb1732 | 254 | |
3b462ec2 | 255 | exit_inferior_1 (inf, 0); |
b77209e0 PA |
256 | |
257 | if (print_inferior_events) | |
f67c0c91 SDJ |
258 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), |
259 | inf->num, | |
a068643d | 260 | target_pid_to_str (ptid_t (pid)).c_str ()); |
b77209e0 PA |
261 | } |
262 | ||
6c95b8df PA |
263 | void |
264 | inferior_appeared (struct inferior *inf, int pid) | |
265 | { | |
08036331 PA |
266 | /* If this is the first inferior with threads, reset the global |
267 | thread id. */ | |
873657b9 | 268 | delete_exited_threads (); |
08036331 PA |
269 | if (!any_thread_p ()) |
270 | init_thread_list (); | |
271 | ||
6c95b8df | 272 | inf->pid = pid; |
2ddf4301 SM |
273 | inf->has_exit_code = 0; |
274 | inf->exit_code = 0; | |
6c95b8df | 275 | |
76727919 | 276 | gdb::observers::inferior_appeared.notify (inf); |
6c95b8df PA |
277 | } |
278 | ||
6c95b8df | 279 | struct inferior * |
b77209e0 PA |
280 | find_inferior_id (int num) |
281 | { | |
08036331 | 282 | for (inferior *inf : all_inferiors ()) |
b77209e0 PA |
283 | if (inf->num == num) |
284 | return inf; | |
285 | ||
286 | return NULL; | |
287 | } | |
288 | ||
289 | struct inferior * | |
5b6d1e4f | 290 | find_inferior_pid (process_stratum_target *targ, int pid) |
b77209e0 | 291 | { |
6c95b8df PA |
292 | /* Looking for inferior pid == 0 is always wrong, and indicative of |
293 | a bug somewhere else. There may be more than one with pid == 0, | |
294 | for instance. */ | |
295 | gdb_assert (pid != 0); | |
296 | ||
5b6d1e4f | 297 | for (inferior *inf : all_inferiors (targ)) |
b77209e0 PA |
298 | if (inf->pid == pid) |
299 | return inf; | |
300 | ||
301 | return NULL; | |
302 | } | |
303 | ||
c9657e70 SM |
304 | /* See inferior.h */ |
305 | ||
306 | struct inferior * | |
5b6d1e4f | 307 | find_inferior_ptid (process_stratum_target *targ, ptid_t ptid) |
c9657e70 | 308 | { |
5b6d1e4f | 309 | return find_inferior_pid (targ, ptid.pid ()); |
c9657e70 SM |
310 | } |
311 | ||
32990ada | 312 | /* See inferior.h. */ |
6c95b8df PA |
313 | |
314 | struct inferior * | |
315 | find_inferior_for_program_space (struct program_space *pspace) | |
316 | { | |
08036331 | 317 | struct inferior *cur_inf = current_inferior (); |
32990ada | 318 | |
08036331 PA |
319 | if (cur_inf->pspace == pspace) |
320 | return cur_inf; | |
6c95b8df | 321 | |
08036331 PA |
322 | for (inferior *inf : all_inferiors ()) |
323 | if (inf->pspace == pspace) | |
324 | return inf; | |
6c95b8df PA |
325 | |
326 | return NULL; | |
327 | } | |
328 | ||
b77209e0 PA |
329 | int |
330 | have_inferiors (void) | |
331 | { | |
08036331 PA |
332 | for (inferior *inf ATTRIBUTE_UNUSED : all_non_exited_inferiors ()) |
333 | return 1; | |
6c95b8df PA |
334 | |
335 | return 0; | |
b77209e0 PA |
336 | } |
337 | ||
8020350c DB |
338 | /* Return the number of live inferiors. We account for the case |
339 | where an inferior might have a non-zero pid but no threads, as | |
340 | in the middle of a 'mourn' operation. */ | |
341 | ||
c35b1492 | 342 | int |
5b6d1e4f | 343 | number_of_live_inferiors (process_stratum_target *proc_target) |
c35b1492 | 344 | { |
8020350c | 345 | int num_inf = 0; |
6c95b8df | 346 | |
5b6d1e4f | 347 | for (inferior *inf : all_non_exited_inferiors (proc_target)) |
5018ce90 | 348 | if (inf->has_execution ()) |
08036331 PA |
349 | for (thread_info *tp ATTRIBUTE_UNUSED : inf->non_exited_threads ()) |
350 | { | |
351 | /* Found a live thread in this inferior, go to the next | |
352 | inferior. */ | |
353 | ++num_inf; | |
354 | break; | |
355 | } | |
cd2effb2 | 356 | |
8020350c DB |
357 | return num_inf; |
358 | } | |
359 | ||
360 | /* Return true if there is at least one live inferior. */ | |
361 | ||
362 | int | |
363 | have_live_inferiors (void) | |
364 | { | |
5b6d1e4f | 365 | return number_of_live_inferiors (NULL) > 0; |
6c95b8df PA |
366 | } |
367 | ||
bed8455c DE |
368 | /* Prune away any unused inferiors, and then prune away no longer used |
369 | program spaces. */ | |
6c95b8df PA |
370 | |
371 | void | |
372 | prune_inferiors (void) | |
373 | { | |
908641f5 | 374 | inferior *ss; |
6c95b8df PA |
375 | |
376 | ss = inferior_list; | |
6c95b8df PA |
377 | while (ss) |
378 | { | |
3a3fd0fd | 379 | if (!ss->deletable () |
6c95b8df PA |
380 | || !ss->removable |
381 | || ss->pid != 0) | |
382 | { | |
908641f5 | 383 | ss = ss->next; |
6c95b8df PA |
384 | continue; |
385 | } | |
386 | ||
908641f5 | 387 | inferior *ss_next = ss->next; |
7a41607e | 388 | delete_inferior (ss); |
908641f5 | 389 | ss = ss_next; |
6c95b8df | 390 | } |
6c95b8df PA |
391 | } |
392 | ||
393 | /* Simply returns the count of inferiors. */ | |
394 | ||
395 | int | |
396 | number_of_inferiors (void) | |
397 | { | |
08036331 PA |
398 | auto rng = all_inferiors (); |
399 | return std::distance (rng.begin (), rng.end ()); | |
c35b1492 PA |
400 | } |
401 | ||
db2b9fdd PA |
402 | /* Converts an inferior process id to a string. Like |
403 | target_pid_to_str, but special cases the null process. */ | |
404 | ||
a068643d | 405 | static std::string |
db2b9fdd PA |
406 | inferior_pid_to_str (int pid) |
407 | { | |
408 | if (pid != 0) | |
f2907e49 | 409 | return target_pid_to_str (ptid_t (pid)); |
db2b9fdd PA |
410 | else |
411 | return _("<null>"); | |
412 | } | |
413 | ||
4034d0ff AT |
414 | /* See inferior.h. */ |
415 | ||
416 | void | |
417 | print_selected_inferior (struct ui_out *uiout) | |
418 | { | |
4034d0ff | 419 | struct inferior *inf = current_inferior (); |
53488a6e | 420 | const char *filename = inf->pspace->pspace_exec_filename; |
112e8700 | 421 | |
53488a6e TS |
422 | if (filename == NULL) |
423 | filename = _("<noexec>"); | |
112e8700 SM |
424 | |
425 | uiout->message (_("[Switching to inferior %d [%s] (%s)]\n"), | |
a068643d | 426 | inf->num, inferior_pid_to_str (inf->pid).c_str (), filename); |
4034d0ff AT |
427 | } |
428 | ||
121b3efd PA |
429 | /* Helper for print_inferior. Returns the 'connection-id' string for |
430 | PROC_TARGET. */ | |
431 | ||
432 | static std::string | |
433 | uiout_field_connection (process_stratum_target *proc_target) | |
434 | { | |
435 | if (proc_target == NULL) | |
436 | { | |
437 | return {}; | |
438 | } | |
439 | else if (proc_target->connection_string () != NULL) | |
440 | { | |
441 | return string_printf ("%d (%s %s)", | |
442 | proc_target->connection_number, | |
443 | proc_target->shortname (), | |
444 | proc_target->connection_string ()); | |
445 | } | |
446 | else | |
447 | { | |
448 | return string_printf ("%d (%s)", | |
449 | proc_target->connection_number, | |
450 | proc_target->shortname ()); | |
451 | } | |
452 | } | |
453 | ||
b77209e0 PA |
454 | /* Prints the list of inferiors and their details on UIOUT. This is a |
455 | version of 'info_inferior_command' suitable for use from MI. | |
456 | ||
c82c0b55 MS |
457 | If REQUESTED_INFERIORS is not NULL, it's a list of GDB ids of the |
458 | inferiors that should be printed. Otherwise, all inferiors are | |
459 | printed. */ | |
460 | ||
461 | static void | |
1d12d88f | 462 | print_inferior (struct ui_out *uiout, const char *requested_inferiors) |
b77209e0 | 463 | { |
8bb318c6 | 464 | int inf_count = 0; |
121b3efd | 465 | size_t connection_id_len = 20; |
b77209e0 | 466 | |
8bb318c6 | 467 | /* Compute number of inferiors we will print. */ |
08036331 | 468 | for (inferior *inf : all_inferiors ()) |
8bb318c6 | 469 | { |
c82c0b55 | 470 | if (!number_is_in_list (requested_inferiors, inf->num)) |
8bb318c6 TT |
471 | continue; |
472 | ||
121b3efd PA |
473 | std::string conn = uiout_field_connection (inf->process_target ()); |
474 | if (connection_id_len < conn.size ()) | |
475 | connection_id_len = conn.size (); | |
476 | ||
8bb318c6 TT |
477 | ++inf_count; |
478 | } | |
479 | ||
480 | if (inf_count == 0) | |
481 | { | |
112e8700 | 482 | uiout->message ("No inferiors.\n"); |
8bb318c6 TT |
483 | return; |
484 | } | |
485 | ||
121b3efd | 486 | ui_out_emit_table table_emitter (uiout, 5, inf_count, "inferiors"); |
112e8700 SM |
487 | uiout->table_header (1, ui_left, "current", ""); |
488 | uiout->table_header (4, ui_left, "number", "Num"); | |
489 | uiout->table_header (17, ui_left, "target-id", "Description"); | |
121b3efd PA |
490 | uiout->table_header (connection_id_len, ui_left, |
491 | "connection-id", "Connection"); | |
112e8700 | 492 | uiout->table_header (17, ui_left, "exec", "Executable"); |
b77209e0 | 493 | |
112e8700 | 494 | uiout->table_body (); |
d9ebdab7 TBA |
495 | |
496 | /* Restore the current thread after the loop because we switch the | |
497 | inferior in the loop. */ | |
498 | scoped_restore_current_pspace_and_thread restore_pspace_thread; | |
499 | inferior *current_inf = current_inferior (); | |
08036331 | 500 | for (inferior *inf : all_inferiors ()) |
b77209e0 | 501 | { |
c82c0b55 | 502 | if (!number_is_in_list (requested_inferiors, inf->num)) |
b77209e0 PA |
503 | continue; |
504 | ||
2e783024 | 505 | ui_out_emit_tuple tuple_emitter (uiout, NULL); |
b77209e0 | 506 | |
d9ebdab7 | 507 | if (inf == current_inf) |
112e8700 | 508 | uiout->field_string ("current", "*"); |
b77209e0 | 509 | else |
112e8700 | 510 | uiout->field_skip ("current"); |
b77209e0 | 511 | |
381befee | 512 | uiout->field_signed ("number", inf->num); |
6c95b8df | 513 | |
d9ebdab7 TBA |
514 | /* Because target_pid_to_str uses current_top_target, |
515 | switch the inferior. */ | |
516 | switch_to_inferior_no_thread (inf); | |
517 | ||
112e8700 | 518 | uiout->field_string ("target-id", inferior_pid_to_str (inf->pid)); |
6c95b8df | 519 | |
121b3efd PA |
520 | std::string conn = uiout_field_connection (inf->process_target ()); |
521 | uiout->field_string ("connection-id", conn.c_str ()); | |
522 | ||
1f0c4988 | 523 | if (inf->pspace->pspace_exec_filename != NULL) |
112e8700 | 524 | uiout->field_string ("exec", inf->pspace->pspace_exec_filename); |
6c95b8df | 525 | else |
112e8700 | 526 | uiout->field_skip ("exec"); |
6c95b8df PA |
527 | |
528 | /* Print extra info that isn't really fit to always present in | |
529 | tabular form. Currently we print the vfork parent/child | |
530 | relationships, if any. */ | |
531 | if (inf->vfork_parent) | |
532 | { | |
112e8700 | 533 | uiout->text (_("\n\tis vfork child of inferior ")); |
381befee | 534 | uiout->field_signed ("vfork-parent", inf->vfork_parent->num); |
6c95b8df PA |
535 | } |
536 | if (inf->vfork_child) | |
537 | { | |
112e8700 | 538 | uiout->text (_("\n\tis vfork parent of inferior ")); |
381befee | 539 | uiout->field_signed ("vfork-child", inf->vfork_child->num); |
6c95b8df | 540 | } |
b77209e0 | 541 | |
112e8700 | 542 | uiout->text ("\n"); |
b77209e0 | 543 | } |
b77209e0 PA |
544 | } |
545 | ||
2277426b | 546 | static void |
e503b191 | 547 | detach_inferior_command (const char *args, int from_tty) |
2277426b | 548 | { |
2277426b | 549 | if (!args || !*args) |
af624141 | 550 | error (_("Requires argument (inferior id(s) to detach)")); |
2277426b | 551 | |
bfd28288 PA |
552 | number_or_range_parser parser (args); |
553 | while (!parser.finished ()) | |
af624141 | 554 | { |
bfd28288 | 555 | int num = parser.get_number (); |
2277426b | 556 | |
00431a78 PA |
557 | inferior *inf = find_inferior_id (num); |
558 | if (inf == NULL) | |
af624141 MS |
559 | { |
560 | warning (_("Inferior ID %d not known."), num); | |
561 | continue; | |
562 | } | |
2277426b | 563 | |
00431a78 | 564 | if (inf->pid == 0) |
e3ae3c43 PP |
565 | { |
566 | warning (_("Inferior ID %d is not running."), num); | |
567 | continue; | |
568 | } | |
2277426b | 569 | |
00431a78 PA |
570 | thread_info *tp = any_thread_of_inferior (inf); |
571 | if (tp == NULL) | |
af624141 MS |
572 | { |
573 | warning (_("Inferior ID %d has no threads."), num); | |
574 | continue; | |
575 | } | |
2277426b | 576 | |
00431a78 | 577 | switch_to_thread (tp); |
2277426b | 578 | |
af624141 MS |
579 | detach_command (NULL, from_tty); |
580 | } | |
2277426b PA |
581 | } |
582 | ||
583 | static void | |
e503b191 | 584 | kill_inferior_command (const char *args, int from_tty) |
2277426b | 585 | { |
2277426b | 586 | if (!args || !*args) |
af624141 | 587 | error (_("Requires argument (inferior id(s) to kill)")); |
2277426b | 588 | |
bfd28288 PA |
589 | number_or_range_parser parser (args); |
590 | while (!parser.finished ()) | |
af624141 | 591 | { |
bfd28288 | 592 | int num = parser.get_number (); |
2277426b | 593 | |
00431a78 PA |
594 | inferior *inf = find_inferior_id (num); |
595 | if (inf == NULL) | |
af624141 MS |
596 | { |
597 | warning (_("Inferior ID %d not known."), num); | |
598 | continue; | |
599 | } | |
2277426b | 600 | |
00431a78 | 601 | if (inf->pid == 0) |
e3ae3c43 PP |
602 | { |
603 | warning (_("Inferior ID %d is not running."), num); | |
604 | continue; | |
605 | } | |
2277426b | 606 | |
00431a78 PA |
607 | thread_info *tp = any_thread_of_inferior (inf); |
608 | if (tp == NULL) | |
af624141 MS |
609 | { |
610 | warning (_("Inferior ID %d has no threads."), num); | |
611 | continue; | |
612 | } | |
2277426b | 613 | |
00431a78 | 614 | switch_to_thread (tp); |
2277426b | 615 | |
af624141 MS |
616 | target_kill (); |
617 | } | |
2277426b PA |
618 | |
619 | bfd_cache_close_all (); | |
620 | } | |
621 | ||
db2d40f7 PA |
622 | /* See inferior.h. */ |
623 | ||
624 | void | |
625 | switch_to_inferior_no_thread (inferior *inf) | |
626 | { | |
627 | set_current_inferior (inf); | |
628 | switch_to_no_thread (); | |
629 | set_current_program_space (inf->pspace); | |
630 | } | |
631 | ||
2277426b | 632 | static void |
e503b191 | 633 | inferior_command (const char *args, int from_tty) |
2277426b | 634 | { |
6c95b8df PA |
635 | struct inferior *inf; |
636 | int num; | |
2277426b PA |
637 | |
638 | num = parse_and_eval_long (args); | |
639 | ||
6c95b8df PA |
640 | inf = find_inferior_id (num); |
641 | if (inf == NULL) | |
2277426b PA |
642 | error (_("Inferior ID %d not known."), num); |
643 | ||
6c95b8df | 644 | if (inf->pid != 0) |
2277426b | 645 | { |
00431a78 | 646 | if (inf != current_inferior ()) |
6c95b8df | 647 | { |
00431a78 PA |
648 | thread_info *tp = any_thread_of_inferior (inf); |
649 | if (tp == NULL) | |
6c95b8df | 650 | error (_("Inferior has no threads.")); |
2277426b | 651 | |
00431a78 | 652 | switch_to_thread (tp); |
6c95b8df PA |
653 | } |
654 | ||
76727919 | 655 | gdb::observers::user_selected_context_changed.notify |
4034d0ff AT |
656 | (USER_SELECTED_INFERIOR |
657 | | USER_SELECTED_THREAD | |
658 | | USER_SELECTED_FRAME); | |
2277426b | 659 | } |
6c95b8df PA |
660 | else |
661 | { | |
db2d40f7 | 662 | switch_to_inferior_no_thread (inf); |
2277426b | 663 | |
76727919 TT |
664 | gdb::observers::user_selected_context_changed.notify |
665 | (USER_SELECTED_INFERIOR); | |
2277426b PA |
666 | } |
667 | } | |
668 | ||
b77209e0 PA |
669 | /* Print information about currently known inferiors. */ |
670 | ||
671 | static void | |
1d12d88f | 672 | info_inferiors_command (const char *args, int from_tty) |
b77209e0 | 673 | { |
79a45e25 | 674 | print_inferior (current_uiout, args); |
b77209e0 PA |
675 | } |
676 | ||
6c95b8df PA |
677 | /* remove-inferior ID */ |
678 | ||
70221824 | 679 | static void |
0b39b52e | 680 | remove_inferior_command (const char *args, int from_tty) |
6c95b8df | 681 | { |
af624141 MS |
682 | if (args == NULL || *args == '\0') |
683 | error (_("Requires an argument (inferior id(s) to remove)")); | |
6c95b8df | 684 | |
bfd28288 PA |
685 | number_or_range_parser parser (args); |
686 | while (!parser.finished ()) | |
af624141 | 687 | { |
bfd28288 PA |
688 | int num = parser.get_number (); |
689 | struct inferior *inf = find_inferior_id (num); | |
6c95b8df | 690 | |
af624141 MS |
691 | if (inf == NULL) |
692 | { | |
693 | warning (_("Inferior ID %d not known."), num); | |
694 | continue; | |
695 | } | |
696 | ||
3a3fd0fd | 697 | if (!inf->deletable ()) |
af624141 | 698 | { |
eb2332d7 | 699 | warning (_("Can not remove current inferior %d."), num); |
af624141 MS |
700 | continue; |
701 | } | |
8fa067af | 702 | |
af624141 MS |
703 | if (inf->pid != 0) |
704 | { | |
705 | warning (_("Can not remove active inferior %d."), num); | |
706 | continue; | |
707 | } | |
6c95b8df | 708 | |
7a41607e | 709 | delete_inferior (inf); |
af624141 | 710 | } |
6c95b8df PA |
711 | } |
712 | ||
a79b8f6e VP |
713 | struct inferior * |
714 | add_inferior_with_spaces (void) | |
715 | { | |
716 | struct address_space *aspace; | |
717 | struct program_space *pspace; | |
718 | struct inferior *inf; | |
6ecd4729 | 719 | struct gdbarch_info info; |
a79b8f6e VP |
720 | |
721 | /* If all inferiors share an address space on this system, this | |
722 | doesn't really return a new address space; otherwise, it | |
723 | really does. */ | |
724 | aspace = maybe_new_address_space (); | |
564b1e3f | 725 | pspace = new program_space (aspace); |
a79b8f6e VP |
726 | inf = add_inferior (0); |
727 | inf->pspace = pspace; | |
728 | inf->aspace = pspace->aspace; | |
729 | ||
6ecd4729 PA |
730 | /* Setup the inferior's initial arch, based on information obtained |
731 | from the global "set ..." options. */ | |
732 | gdbarch_info_init (&info); | |
733 | inf->gdbarch = gdbarch_find_by_info (info); | |
734 | /* The "set ..." options reject invalid settings, so we should | |
735 | always have a valid arch by now. */ | |
736 | gdb_assert (inf->gdbarch != NULL); | |
737 | ||
a79b8f6e VP |
738 | return inf; |
739 | } | |
6c95b8df | 740 | |
5b6d1e4f PA |
741 | /* Switch to inferior NEW_INF, a new inferior, and unless |
742 | NO_CONNECTION is true, push the process_stratum_target of ORG_INF | |
743 | to NEW_INF. */ | |
744 | ||
745 | static void | |
746 | switch_to_inferior_and_push_target (inferior *new_inf, | |
747 | bool no_connection, inferior *org_inf) | |
748 | { | |
749 | process_stratum_target *proc_target = org_inf->process_target (); | |
750 | ||
751 | /* Switch over temporarily, while reading executable and | |
752 | symbols. */ | |
753 | switch_to_inferior_no_thread (new_inf); | |
754 | ||
755 | /* Reuse the target for new inferior. */ | |
756 | if (!no_connection && proc_target != NULL) | |
121b3efd PA |
757 | { |
758 | push_target (proc_target); | |
759 | if (proc_target->connection_string () != NULL) | |
760 | printf_filtered (_("Added inferior %d on connection %d (%s %s)\n"), | |
761 | new_inf->num, | |
762 | proc_target->connection_number, | |
763 | proc_target->shortname (), | |
764 | proc_target->connection_string ()); | |
765 | else | |
766 | printf_filtered (_("Added inferior %d on connection %d (%s)\n"), | |
767 | new_inf->num, | |
768 | proc_target->connection_number, | |
769 | proc_target->shortname ()); | |
770 | } | |
771 | else | |
772 | printf_filtered (_("Added inferior %d\n"), new_inf->num); | |
5b6d1e4f PA |
773 | } |
774 | ||
775 | /* add-inferior [-copies N] [-exec FILENAME] [-no-connection] */ | |
6c95b8df | 776 | |
70221824 | 777 | static void |
0b39b52e | 778 | add_inferior_command (const char *args, int from_tty) |
6c95b8df PA |
779 | { |
780 | int i, copies = 1; | |
773a1edc | 781 | gdb::unique_xmalloc_ptr<char> exec; |
ecf45d2c | 782 | symfile_add_flags add_flags = 0; |
5b6d1e4f | 783 | bool no_connection = false; |
6c95b8df | 784 | |
ecf45d2c SL |
785 | if (from_tty) |
786 | add_flags |= SYMFILE_VERBOSE; | |
787 | ||
6c95b8df PA |
788 | if (args) |
789 | { | |
773a1edc | 790 | gdb_argv built_argv (args); |
6c95b8df | 791 | |
773a1edc | 792 | for (char **argv = built_argv.get (); *argv != NULL; argv++) |
6c95b8df PA |
793 | { |
794 | if (**argv == '-') | |
795 | { | |
796 | if (strcmp (*argv, "-copies") == 0) | |
797 | { | |
798 | ++argv; | |
799 | if (!*argv) | |
800 | error (_("No argument to -copies")); | |
801 | copies = parse_and_eval_long (*argv); | |
802 | } | |
5b6d1e4f PA |
803 | else if (strcmp (*argv, "-no-connection") == 0) |
804 | no_connection = true; | |
6c95b8df PA |
805 | else if (strcmp (*argv, "-exec") == 0) |
806 | { | |
807 | ++argv; | |
808 | if (!*argv) | |
809 | error (_("No argument to -exec")); | |
773a1edc | 810 | exec.reset (tilde_expand (*argv)); |
6c95b8df PA |
811 | } |
812 | } | |
813 | else | |
814 | error (_("Invalid argument")); | |
815 | } | |
816 | } | |
817 | ||
5b6d1e4f PA |
818 | inferior *orginf = current_inferior (); |
819 | ||
5ed8105e | 820 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df PA |
821 | |
822 | for (i = 0; i < copies; ++i) | |
823 | { | |
5b6d1e4f | 824 | inferior *inf = add_inferior_with_spaces (); |
6c95b8df | 825 | |
5b6d1e4f | 826 | switch_to_inferior_and_push_target (inf, no_connection, orginf); |
6c95b8df PA |
827 | |
828 | if (exec != NULL) | |
829 | { | |
773a1edc TT |
830 | exec_file_attach (exec.get (), from_tty); |
831 | symbol_file_add_main (exec.get (), add_flags); | |
6c95b8df PA |
832 | } |
833 | } | |
6c95b8df PA |
834 | } |
835 | ||
5b6d1e4f | 836 | /* clone-inferior [-copies N] [ID] [-no-connection] */ |
6c95b8df | 837 | |
70221824 | 838 | static void |
0b39b52e | 839 | clone_inferior_command (const char *args, int from_tty) |
6c95b8df PA |
840 | { |
841 | int i, copies = 1; | |
6c95b8df | 842 | struct inferior *orginf = NULL; |
5b6d1e4f | 843 | bool no_connection = false; |
6c95b8df PA |
844 | |
845 | if (args) | |
846 | { | |
773a1edc | 847 | gdb_argv built_argv (args); |
6c95b8df | 848 | |
773a1edc | 849 | char **argv = built_argv.get (); |
6c95b8df PA |
850 | for (; *argv != NULL; argv++) |
851 | { | |
852 | if (**argv == '-') | |
853 | { | |
854 | if (strcmp (*argv, "-copies") == 0) | |
855 | { | |
856 | ++argv; | |
857 | if (!*argv) | |
858 | error (_("No argument to -copies")); | |
859 | copies = parse_and_eval_long (*argv); | |
860 | ||
861 | if (copies < 0) | |
862 | error (_("Invalid copies number")); | |
863 | } | |
5b6d1e4f PA |
864 | else if (strcmp (*argv, "-no-connection") == 0) |
865 | no_connection = true; | |
6c95b8df PA |
866 | } |
867 | else | |
868 | { | |
869 | if (orginf == NULL) | |
870 | { | |
871 | int num; | |
872 | ||
873 | /* The first non-option (-) argument specified the | |
874 | program space ID. */ | |
875 | num = parse_and_eval_long (*argv); | |
876 | orginf = find_inferior_id (num); | |
877 | ||
878 | if (orginf == NULL) | |
879 | error (_("Inferior ID %d not known."), num); | |
880 | continue; | |
881 | } | |
882 | else | |
883 | error (_("Invalid argument")); | |
884 | } | |
885 | } | |
886 | } | |
887 | ||
888 | /* If no inferior id was specified, then the user wants to clone the | |
889 | current inferior. */ | |
890 | if (orginf == NULL) | |
891 | orginf = current_inferior (); | |
892 | ||
5ed8105e | 893 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df PA |
894 | |
895 | for (i = 0; i < copies; ++i) | |
896 | { | |
897 | struct address_space *aspace; | |
898 | struct program_space *pspace; | |
899 | struct inferior *inf; | |
900 | ||
901 | /* If all inferiors share an address space on this system, this | |
902 | doesn't really return a new address space; otherwise, it | |
903 | really does. */ | |
904 | aspace = maybe_new_address_space (); | |
564b1e3f | 905 | pspace = new program_space (aspace); |
6c95b8df PA |
906 | inf = add_inferior (0); |
907 | inf->pspace = pspace; | |
908 | inf->aspace = pspace->aspace; | |
6ecd4729 PA |
909 | inf->gdbarch = orginf->gdbarch; |
910 | ||
5b6d1e4f PA |
911 | switch_to_inferior_and_push_target (inf, no_connection, orginf); |
912 | ||
6ecd4729 PA |
913 | /* If the original inferior had a user specified target |
914 | description, make the clone use it too. */ | |
915 | if (target_desc_info_from_user_p (inf->tdesc_info)) | |
916 | copy_inferior_target_desc_info (inf, orginf); | |
6c95b8df | 917 | |
6c95b8df PA |
918 | clone_program_space (pspace, orginf->pspace); |
919 | } | |
6c95b8df PA |
920 | } |
921 | ||
b77209e0 PA |
922 | /* Print notices when new inferiors are created and die. */ |
923 | static void | |
924 | show_print_inferior_events (struct ui_file *file, int from_tty, | |
925 | struct cmd_list_element *c, const char *value) | |
926 | { | |
927 | fprintf_filtered (file, _("Printing of inferior events is %s.\n"), value); | |
928 | } | |
929 | ||
e3940304 PA |
930 | /* Return a new value for the selected inferior's id. */ |
931 | ||
932 | static struct value * | |
933 | inferior_id_make_value (struct gdbarch *gdbarch, struct internalvar *var, | |
934 | void *ignore) | |
935 | { | |
936 | struct inferior *inf = current_inferior (); | |
937 | ||
938 | return value_from_longest (builtin_type (gdbarch)->builtin_int, inf->num); | |
939 | } | |
940 | ||
941 | /* Implementation of `$_inferior' variable. */ | |
942 | ||
943 | static const struct internalvar_funcs inferior_funcs = | |
944 | { | |
945 | inferior_id_make_value, | |
946 | NULL, | |
947 | NULL | |
948 | }; | |
949 | ||
6c95b8df PA |
950 | \f |
951 | ||
6c95b8df PA |
952 | void |
953 | initialize_inferiors (void) | |
954 | { | |
06da564e EZ |
955 | struct cmd_list_element *c = NULL; |
956 | ||
6c95b8df PA |
957 | /* There's always one inferior. Note that this function isn't an |
958 | automatic _initialize_foo function, since other _initialize_foo | |
959 | routines may need to install their per-inferior data keys. We | |
960 | can only allocate an inferior when all those modules have done | |
961 | that. Do this after initialize_progspace, due to the | |
962 | current_program_space reference. */ | |
f67c0c91 | 963 | current_inferior_ = add_inferior_silent (0); |
3a3fd0fd | 964 | current_inferior_->incref (); |
6c95b8df PA |
965 | current_inferior_->pspace = current_program_space; |
966 | current_inferior_->aspace = current_program_space->aspace; | |
6ecd4729 PA |
967 | /* The architecture will be initialized shortly, by |
968 | initialize_current_architecture. */ | |
6c95b8df | 969 | |
a3c25011 TT |
970 | add_info ("inferiors", info_inferiors_command, |
971 | _("Print a list of inferiors being managed.\n\ | |
972 | Usage: info inferiors [ID]...\n\ | |
973 | If IDs are specified, the list is limited to just those inferiors.\n\ | |
974 | By default all inferiors are displayed.")); | |
b77209e0 | 975 | |
06da564e | 976 | c = add_com ("add-inferior", no_class, add_inferior_command, _("\ |
6c95b8df | 977 | Add a new inferior.\n\ |
5b6d1e4f | 978 | Usage: add-inferior [-copies N] [-exec FILENAME] [-no-connection]\n\ |
af624141 | 979 | N is the optional number of inferiors to add, default is 1.\n\ |
6c95b8df | 980 | FILENAME is the file name of the executable to use\n\ |
5b6d1e4f PA |
981 | as main program.\n\ |
982 | By default, the new inferior inherits the current inferior's connection.\n\ | |
983 | If -no-connection is specified, the new inferior begins with\n\ | |
984 | no target connection yet.")); | |
06da564e | 985 | set_cmd_completer (c, filename_completer); |
6c95b8df | 986 | |
af624141 MS |
987 | add_com ("remove-inferiors", no_class, remove_inferior_command, _("\ |
988 | Remove inferior ID (or list of IDs).\n\ | |
989 | Usage: remove-inferiors ID...")); | |
6c95b8df PA |
990 | |
991 | add_com ("clone-inferior", no_class, clone_inferior_command, _("\ | |
992 | Clone inferior ID.\n\ | |
5b6d1e4f PA |
993 | Usage: clone-inferior [-copies N] [-no-connection] [ID]\n\ |
994 | Add N copies of inferior ID. The new inferiors have the same\n\ | |
6c95b8df PA |
995 | executable loaded as the copied inferior. If -copies is not specified,\n\ |
996 | adds 1 copy. If ID is not specified, it is the current inferior\n\ | |
5b6d1e4f PA |
997 | that is cloned.\n\ |
998 | By default, the new inferiors inherit the copied inferior's connection.\n\ | |
999 | If -no-connection is specified, the new inferiors begin with\n\ | |
1000 | no target connection yet.")); | |
2277426b | 1001 | |
af624141 | 1002 | add_cmd ("inferiors", class_run, detach_inferior_command, _("\ |
a3c25011 TT |
1003 | Detach from inferior ID (or list of IDS).\n\ |
1004 | Usage; detach inferiors ID..."), | |
2277426b PA |
1005 | &detachlist); |
1006 | ||
af624141 | 1007 | add_cmd ("inferiors", class_run, kill_inferior_command, _("\ |
a3c25011 TT |
1008 | Kill inferior ID (or list of IDs).\n\ |
1009 | Usage: kill inferiors ID..."), | |
2277426b PA |
1010 | &killlist); |
1011 | ||
1012 | add_cmd ("inferior", class_run, inferior_command, _("\ | |
1013 | Use this command to switch between inferiors.\n\ | |
a3c25011 | 1014 | Usage: inferior ID\n\ |
2277426b PA |
1015 | The new inferior ID must be currently known."), |
1016 | &cmdlist); | |
6c95b8df PA |
1017 | |
1018 | add_setshow_boolean_cmd ("inferior-events", no_class, | |
1019 | &print_inferior_events, _("\ | |
e3abbe7e PW |
1020 | Set printing of inferior events (such as inferior start and exit)."), _("\ |
1021 | Show printing of inferior events (such as inferior start and exit)."), NULL, | |
6c95b8df PA |
1022 | NULL, |
1023 | show_print_inferior_events, | |
1024 | &setprintlist, &showprintlist); | |
1025 | ||
e3940304 | 1026 | create_internalvar_type_lazy ("_inferior", &inferior_funcs, NULL); |
b77209e0 | 1027 | } |